ma khidyatam maha-bhagau
draksyathah krsnam antike
antar hrdi sa bhutanam
aste jyotir ivaidhasi
O most fortunate ones, do not lament. You will see Krsna again very soon. He is present in the hearts of all living beings, just as fire lies dormant in wood.
Uddhava understood that Nanda and Yasoda were very impatient to see Krsna, and thus he reassured them that Sri Krsna would come soon.